Keyphrases
- query answering
- data exchange
- integrity constraints
- answering queries
- data complexity
- incomplete information
- tuple generating dependencies
- conjunctive queries
- ontology based data access
- data integration
- query rewriting
- association rules
- inconsistent databases
- schema mappings
- data management
- datalog programs
- query containment
- query answers
- data integration systems
- data mining
- databases
- data warehouse